Dans ce travail de thèse le processus d'information concernant un instant de défaut τ dans un modèle de risque de crédit est décrit par un pont brownien sur l'intervalle stochastique [0, τ]. Un tel processus de pont est caractérisé comme plus adapté dans la modélisation que le modèle classique considérant l'indicatrice I[0,τ]. Après l'étude des formules de Bayes associées, cette approche de modélisation de l'information concernant le temps de défaut est reliée avec d'autres informations sur le marché financier. Ceci est fait à l'aide de la théorie du grossissement de filtration, où la filtration générée par le processus d'information est élargie par la filtration de référence décrivant d'autres informations n'étant pas directement liées avec le défaut. Une attention particulière est consacrée à la classification du temps de défaut par rapport à la filtration minimale mais également à la filtration élargie. Des conditions suffisantes, sous lesquelles τ est totalement inaccessible, sont discutées, mais également un exemple est donné dans lequel τ évite les temps d'arrêt, est totalement inaccessible par rapport à la filtration minimale et prévisible par rapport à la filtration élargie. Enfin, des contrats financiers comme, par exemple, des obligations privée et des crédits default swaps, sont étudiés dans le contexte décrit ci-dessus. / In this PhD thesis the information process concerning a default time τ in a credit risk model is described by a Brownian bridge over the random time interval [0, τ]. Such a bridge process is characterised as to be a more adapted model than the classical one considering the indicator function I[0,τ]. After the study of related Bayes formulas, this approach of modelling information concerning the default time is related with other financial information. This is done with the help of the theory of enlargement of filtration, where the filtration generated by the information process is enlarged with a reference filtration modelling other information not directly associated with the default. A particular attention is paid to the classification of the default time with respect to the minimal filtration but also with respect to the enlarged filtration. Sufficient conditions under which τ is totally inaccessible are discussed, but also an example is given of a τ avoiding the stopping times of the reference filtration, which is totally inaccessible with respect to its own filtration and predictable with respect to the enlarged filtration. Finally, common financial contracts like defaultable bonds and credit default swaps are considered in the above described settings.

Cette thèse comporte deux parties indépendantes. Dans la première partie, nous nous intéressons à l’analyse asymptotique de quelques statistiques sur les arbres binaires de recherche (ABR). Dans la deuxième partie, nous nous intéressons à l’étude du problème du collectionneur de coupons impatient. Dans la première partie, en suivant le modèle introduit par Aguech, Lasmar et Mahmoud [Probab. Engrg. Inform. Sci. 21 (2007) 133—141], on définit la profondeur pondérée d’un nœud dans un arbre binaire enraciné étiqueté comme la somme de toutes les clés sur le chemin qui relie ce nœud à la racine. Nous analysons alors dans ABR, les profondeurs pondérées des nœuds avec des clés données, le dernier nœud inséré, les nœuds ordonnés selon le processus de recherche en profondeur, la profondeur pondérée des trajets, l’indice de Wiener pondéré et les profondeurs pondérées des nœuds avec au plus un enfant. Dans la deuxième partie, nous étudions la forme asymptotique de la courbe de la complétion de la collection conditionnée à T_n≤ (1+Λ), Λ>0, où T_n≃n ln⁡n désigne le temps nécessaire pour compléter la collection. Puis, en tant qu’application, nous étudions les automates déterministes et accessibles et nous fournissons une nouvelle dérivation d’une formule due à Korsunov [Kor78, Kor86] / This Phd thesis is divided into two independent parts. In the first part, we provide an asymptotic analysis of some statistics on the binary search tree. In the second part, we study the coupon collector problem with a constraint. In the first part, following the model introduced by Aguech, Lasmar and Mahmoud [Probab. Engrg. Inform. Sci. 21 (2007) 133—141], the weighted depth of a node in a labelled rooted tree is the sum of all labels on the path connecting the node to the root. We analyze the following statistics : the weighted depths of nodes with given labels, the last inserted node, nodes ordered as visited by the depth first search procees, the weighted path length, the weighted Wiener index and the weighted depths of nodes with at most one child in a random binary search tree. In the second part, we study the asymptotic shape of the completion curve of the collection conditioned to T_n≤ (1+Λ), Λ>0, where T_n≃n ln⁡n is the time needed to complete accessible automata, we provide a new derivation of a formula due to Korsunov [Kor78, Kor86]

Submitted by Johnny Rodrigues (johnnyrodrigues@ufcg.edu.br) on 2018-10-01T14:15:29Z No. of bitstreams: 1 ELLOÁ BARRETO GUEDES COSTA - TESE PPGCC 2013..pdf: 53314941 bytes, checksum: 3758326a173b3852e098b78e3e03a1fc (MD5) / Made available in DSpace on 2018-10-01T14:15:29Z (GMT). No. of bitstreams: 1 ELLOÁ BARRETO GUEDES COSTA - TESE PPGCC 2013..pdf: 53314941 bytes, checksum: 3758326a173b3852e098b78e3e03a1fc (MD5) Previous issue date: 2013-11-13 / CNPq / A Teoria da Informação Quântica é uma área de pesquisa a qual considera o estudo dos limites máximos possíveis para o processamento e transmissão da informação, considerando que esta última encontra-se representada de acordo com as leis da Mecânica Quântica. Uma das maneiras de contribuir com esta área de pesquisa é no desenvolvimento de contrapartidas quânticas para os conceitos da Teoria da Informação Clássica. Graças a esta abordagem é que foi proposta a Teoria da Informação Quântica Erro-Zero, a qual considera o uso e as condições para que canais quânticos ruidosos possam transmitir informação clássica sem erros de decodificação. Apesar da proposição desta teoria e dos progressos recentes, foi identificado que o conhecimento das potencialidades, limitações e aplicações desta teoria ainda é incipiente. Na tentativa de minimizar este problema, esta tese apresenta dois novos conceitos ligados à Teoria da Informação Quântica Erro-Zero: (i) a capacidade quântica de sigilo erro-zero; e a (ii) informação acessível erro-zero de fontes quânticas. Em relação à primeira contribuição, tem-se o estabelecimento das condições necessárias para enviar informação por canais quânticos ruidosos sem que haja erros de decodificação e com sigilo absoluto, identificando uma nova capacidade de canais quânticos, estabelecendo a relação desta capacidade com a Teoria dos Grafos e identificando as situações em que esta possui caracterização de letra isolada. A segunda contribuição trata da proposição de uma medida de informação sobre fontes quânticas, a qual mensura o potencial de decodificar, sem erros, estados quânticos emitidos por estas fontes. Obter esta medida é um problema análogo ao de calcular a capacidade erro-zero de canais clássicos equivalentes e não há medida equivalente na Teoria da Informação Erro-Zero Clássica. Os conceitos propostos colaboram para o desenvolvimento da Teoria da Informação Quântica Erro-Zero em termos teóricos e práticos, uma vez que é possível considerar implementações de ambas contribuições com tecnologia existente atualmente. Além disto, intersecções da Teoria da Informação Quântica Erro-Zero junto à Criptografia, Teoria dos Grafos e Ciência da Computação são identificadas. O estabelecimento de tais contribuições colabora diretamente para a resolução de um dos desafios da Teoria da Informação Quântica, o qual trata da determinação de limites para a classe de tarefas de processamento de informação que são possíveis considerando a utilização da Mecânica Quântica. / Quantum Information Theory is a research area that investigates the limits of information processing and transmission considering the laws of Quantum Mechanics. The translation of concepts from Classical Information Theory is a widely known approach to contribute to Quantum Information Theory. Thanks to that, the Quantum Zero-Error Information Theory was proposed. This theory investigates the use and the conditions for classical information exchange through noisy quantum channels without decoding errors. Despite the recent developments, it wasidentified that the knowledge about its potentialities, limitations and applications is still incipient. In the attempt to minimize this problem, this thesis presents two new concepts related to the Quantum Zero-Error Information Theory: (i) the quantum zero-error secrecy capacity; and the (ii) zero-error quantum accessible information. Regarding the first contribution, there is the establishment of the required conditions to send information through quantum channels without decoding errors and with perfect secrecy. This proposal identifies a new capacity of quantum channels, enlightens its relation with Graph Theory, and shows the situations where this capacity has single-letter characterization. Regarding the second contribution, there is the proposal of a quantum information measurement which quantifies the error-free decoding ability of a quantum source. Obtaining such measurement is a problem equivalent to the one of determining the zero-erro capacity of an equivalent classical channel and for which there is no counterpart in Classical Zero-Error Information Theory. The concepts proposed collaborate to Quantum Zero-Error Information Theory in theoretical and practical ways, since it is possible to implement both of them using current technology. Moreover, intersections with Cryptography, Graph Theory and Computer Science were identified. These concepts contribute straightforwardly to the resolution of a challenge of Quantum Information Theory which is the determination of the limits for the tasks of information processing that can be accomplished considering the use of Quantum Mechanics.

Molecular Biology has allowed the characterization and manipulation of the molecules of life in the wet lab. Also the structures of those macromolecules are being continuously elucidated. During the last decades of the past century, there was an increasing interest to study how the different genes are organized into different organisms (‘genomes’) and how those genes are expressed into proteins to achieve their functions. Currently the sequences for many genes over several genomes have been determined. In parallel, the efforts to have the structure of the proteins coded by those genes go on. However it is experimentally much harder to obtain the structure of a protein, rather than just its sequence. For this reason, the number of protein structures available in databases is an order of magnitude or so lower than protein sequences. Furthermore, in order to understand how living organisms work at molecular level we need the information about the interaction of those proteins. Elucidating the structure of protein macromolecular assemblies is still more difficult. To that end, the use of computers to predict the structure of these complexes has gained interest over the last decades.<p>The main subject of this thesis is the evaluation of current available computational methods to predict protein – protein interactions and build an atomic model of the complex. The core of the thesis is the evaluation protocol I have developed at Service de Conformation des Macromolécules Biologiques et de Bioinformatique, Université Libre de Bruxelles, and its computer implementation. This method has been massively used to evaluate the results on blind protein – protein interaction prediction in the context of the world-wide experiment CAPRI, which have been thoroughly reviewed in several publications [1-3]. In this experiment the structure of a protein complex (‘the target’) had to be modeled starting from the coordinates of the isolated molecules, prior to the release of the structure of the complex (this is commonly referred as ‘docking’).<p>The assessment protocol let us compute some parameters to rank docking models according to their quality, into 3 main categories: ‘Highly Accurate’, ‘Medium Accurate’, ‘Acceptable’ and ‘Incorrect’. The efficiency of our evaluation and ranking is clearly shown, even for borderline cases between categories. The correlation of the ranking parameters is analyzed further. In the same section where the evaluation protocol is presented, the ranking participants give to their predictions is also studied, since often, good solutions are not easily recognized among the pool of computer generated decoys.<p>An overview of the CAPRI results made per target structure and per participant regarding the computational method they used and the difficulty of the complex. Also in CAPRI there is a new ongoing experiment about scoring previously and anonymously generated models by other participants (the ‘Scoring’ experiment). Its promising results are also analyzed, in respect of the original CAPRI experiment. The Scoring experiment was a step towards the use of combine methods to predict the structure of protein – protein complexes. We discuss here its possible application to predict the structure of protein complexes, from a clustering study on the different results.<p>In the last chapter of the thesis, I present the preliminary results of an ongoing study on the conformational changes in protein structures upon complexation, as those rearrangements pose serious limitations to current computational methods predicting the structure protein complexes. Protein structures are classified according to the magnitude of its conformational re-arrangement and the involvement of interfaces and particular secondary structure elements is discussed. At the end of the chapter, some guidelines and future work is proposed to complete the survey. / Doctorat en Sciences / info:eu-repo/semantics/nonPublished

本論文所使用之研究方法為質化訪談和實況觀察。從而分析公共圖書 館面對弱勢族群之角色定位和策略以及舉辦讀書會需求。 圖書館也可以證明自身的價值，幫助弱勢族群充分使用資源提升 閱讀風氣。以下為本研究目的 : 1.瞭解視障者參與讀書會的動機。 2.瞭解視覺障礙者進行讀書會的方式。 3.瞭解圖書館協助視障者經營讀會的規劃與瓶頸，提升對於相 關弱勢族群的服務。 / The research methods used in this paper are qualitative interviews and observational Method. It analyzed the role and strategies of public library in the face of the underprivileged groups as well as the needs of disadvantaged groups organized the book club. The library can also prove its value. Helping the disadvantaged groups make full use of the library, which provide a friendly, and safe reading atmosphere. The following is the purpose of this study: 1. To understand the reading motivations of visually impaired. 2. To understand the reading patterns of visually impaired. 3. Understanding the library's business planning and bottlenecks in helping the visually impaired, and also, to enhance the library for the visually impaired related vulnerable groups of services.

The subject of my thesis is the project of Gallery aviation technology and traditions of aviation at the airport Medlánky in Brno. The project also includes urban solution of area airport in Medlánky and linking urban areas Medlánky and Komín by newly designed roads and walking paths. The area of airport consists of the two historic hangars and newly designed buildings for the servise and maintenance of aircraft, for the laboratories and the test room of aviation technology, from the control tower and the gallery aviation technology, in which there is also bistro-cafe. The building with gallery aviation technology formed a compact space for visitors with the other buildings, but at the same time the building is separated from the private area, where the planes are moving freely. In the building with gallery, there are besides the exhibition space designed also the bistro-cafe, areas for management and operation of gallery, technical and sanitary facilities, restoration workshop of historic aircraft, conference halls, meeting and training rooms, clubhouse and accommodation. The building serves as a curtural - public building, wheelchair accessible is available throughout the object.

Content of the Diploma thesis is the design documentation a block of flats with trade gallery in Tábor. The design documentation and annexes of diploma thesis are elaborated according to present valid laws, goverment´s restrictions and standards. This object is located on plot no. 1457/33 and 1457/1 cadastre unit Tábor. The building is situated in area designated to housing development. Next to the land are there public infrastructure. The apartment building is divided into 20 flats including one accessible flat and café for 60 customers and max 5 employees. Flats are located from second floor except accessible flat, which is in grounfloor. In grounfloor is common storage area and utility room. Building has four (above-ground) floor. Object is dimensioned 31,7 x 25,2 m and high 13,6 m.The object is builded on finished grade. Load-bearing structural systém is from hollow bricks. Building has flat roof and whole object is thermal insulated.

The subject of the diploma thesis is processing of the technical part of the project documentation for the new three-storey home for elderly with partial basement, which is located in the village Ořechov. The object is situated on a flat terrain, which is situated little bit higher than local road. That was used for an architectonic conception of the house –basement is open and accessible by local road from the north side, the rest is under ground. The detached building is partly roofed by a flat green roof and partly roofed by flat roof covered with gravel. The object is divided into individual areas. In the second and third floor is living and social area. 11 dwelling units of different sizes are designed. First floor is also accessible to the public and together with entrance hall and reception, which is situated in the middle of the object with the main entrance on the east side, there are another two separate areas. The left wing serves as a medical department, in the right wing is cofé with his own staff facilities. In the basement is a utility room and storage areas.

The diploma thesis processes project documentation for the construction of a hotel building with a restaurant facility, which is situated on the outskirts of the western undeveloped part of the regional town Jihlava. The building has three floors and is covered by flat roofs. The hotel meets the conditions of a four-star (****) economic standard. It is designed with 24 accommodation units with a capacity of total 52 persons (4 persons with reduced mobility on the 3rd floor) and restaurant service for 92 guests, social facilities and kitchens. The apartments and guest rooms are located on the 2nd and 3rd floor. On the ground floor there is a representative space of the hotel composed of the entrance hall with reception , space for hotel management, space for technical facilities of the building and restaurant with its own kitchen. The building meets the requirements for zero-energy buildings with a combination of a high-quality construction solution with thermal insulation of building and other technological solutions such as photovoltaic power plants or deep boreholes for stepping pump heating The overall character of the building is emphasized by its architectural design in the light of modern lining of the ventilated facade using cement-fiber boards, whose two-color articulation emphasizes both simplicity and shape function of the building. This solution is combined with large glazed areas that give the building a feeling of spaciousness and evocative cleanliness.

The aim of this diploma thesis is to design a low-energy corporate kindergarten with extended opening hours for the Thomas Bata Regional Hospital in Zlín. The building has one wheelchair accessible floor. It includes two separate classes for children with necessary facilities for children and staff. Envelope walls are designed from prefabricated wooden wall panels with PUR foam filing and ETICS. Internal walls are designed from ceramic blocks with clay plasters to provide heat accumulation and stable indoor environment. The superstructure is supported by strip foundations. The building has flat extensive green roof supported by timber I-beams. Energy for floor heating and domestic hot water is provided by a cascade of two air-water heat pumps and solar thermal collectors. Ventilation in the building is provided by air conditioning unit with heat recovery. Its operation is divided in two zones, kitchen and other spaces. The adjacent plot includes a garden with play elements, a stormwater storage basin with an overflow into an infiltration tank. The infiltration tank also serves for threated water from a wastewater treatment plant. Separate part of the thesis includes assessment of 2D thermal field with change proposal and evaluation of selected building structures, . The thesis is elaborated in Revit 2020, DEKSOFT and other software.